Home / 13,913.46-20,870.28-3,525.21

Finding the Fourth Proportional to 13,913.46, 20,870.28 and 3,525.21

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Solution

The fourth proportional to 13,913.46, 20,870.28 and 3,525.21 is: 5,287.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.46 : 20,870.28 = 3,525.21 : x
  2. Step 2: Convert to fraction form
    13,913.46/20,870.28 = 3,525.21/x
  3. Step 3: Cross multiply
    13,913.46x = 20,870.28 × 3,525.21
  4. Step 4: Simplify right side
    13,913.46x = 73,572,119.76
  5. Step 5: Solve for x
    x = 73,572,119.76/13,913.46
  6. Step 6: Final answer
    x = 5,287.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.